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    • 8. 发明授权
    • Dye diffusion transfer employing pyridine azo dye
    • 使用吡啶偶氮染料的染料扩散转移
    • US4139383A
    • 1979-02-13
    • US851107
    • 1977-11-14
    • Heinrich OdenwalderWalter PuschelRudolf Stolzenburg
    • Heinrich OdenwalderWalter PuschelRudolf Stolzenburg
    • G03C7/00C07D213/85C09B29/42G03C8/10G03C1/10G03C1/40G03C5/54
    • G03C8/10C07D213/85C09B29/3621
    • Non-diffusible dye-providing compounds for the dye diffusion transfer process yielding yellow to red color images of wanted absorption characteristics and improved light fastness correspond to the formula(A.sup.1).sub.n -- D -- N .dbd. N -- Py -- (A.sup.1).sub.1-nin whichA.sup.1 represents an oxidizable organic carrier residue which may be attached through a connecting member X and containing a group which confers diffusion resistance, from which carrier residue, either in its oxidized or in its unoxidized form, a part is split off together with the group which confers diffusion resistance under alkaline photographic development conditions, a diffusible azo dye represented by the formula P--N.dbd.N--B being released imagewise at the same time;D represents a heterocyclic or carbocyclic aromatic group;Py represents a pyridine or 1,2-dihydropyridine group which is attached to the azo group through its 3-position and carries an amino or hydroxyl group in its 6-position;N = 0 or 1.
    • 用于染料扩散转移过程的非扩散染料提供化合物产生所需吸收特性和改善的耐光性的黄色至红色图像对应于式(A1)n-D-N = N-Py-(A1)1-n 其中A1表示可氧化的有机载体残余物,其可以通过连接构件X附着并且含有赋予扩散阻力的基团,以其氧化或未氧化形式的载体残余物与其一起分离, 在碱性照相显影条件下赋予扩散阻力的组,由PN = NB表示的可扩散偶氮染料同时成像释放; D表示杂环或碳环芳基; Py表示吡啶​​或1,2-二氢吡啶基,其通过其3-位连接到偶氮基上,并在其6-位上带有氨基或羟基; N = 0或1。